Geologic Atlas of the United States, Sonora Folio, California, U. S. Geological Survey Folio 41

Turner, H. W. and F. L. Ransome, US Geological Survey

Published by Government Printing Office, 1897
Used / Original Wraps / Quantity Available: 0
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First edition, 8 pp.,3 geologic and topographic maps and 1 geologic column sheet. In original printed wraps with black spine cloth, library edition. Size: 18.5 x 21.75 inches. Map scale: 1 to 125,000. *** Condition: Light soiling to wrappers with narrow toned band at top left and repaired tear to lower right of front wrapper; also, penciled number 41 in lower left corner, Generally, a very good copy. *** The Sonora folio was published mainly on account of the gold resources which underlie the quadrangle and forms part of the Gold Belt series of folios. It contains an early style topographic map, an aerial geologic map, an economic geology map and a structure sections map. The topo sheet shows the surface physical (hills, rivers, lakes, etc.) and cultural features (buildings, ranches, farms, roads, railroads, towns, localities, ferries, etc.) within about an 944 square mile area as they existed almost 100 years ago. Some of the named places shown in the map include: Towns: Sonora, Lagrange, Merced Falls etc. (many smaller localities than this), plus many individual homes and farms. Water bodies: Tuolumne River, Merced River and many smaller waterways. Other features: Table Mountain, Penon Blanco Ridge, Bear Valley, Hunter Valley and multiple other geological landmarks. The geologic map is attractively colored with 13 colors, patterns, shadings, tints, and/or hues used to illustrate the local geologic formations. *** In 1894, the USGS implemented a plan to prepare a geologic map of the US in the form of over 3,000 quadrangle atlas sheets issued individually in folio size. The essential parts of each folio were a description of the region surveyed, a topographic map, and an aerial geologic map. Additional geologic map sheets and illustrations would be included as determined by the important economic and/or scenic characteristics found in the area. The final publication was intended for the layman "to give them the highest practical and educational value" (Powell, 15th AR). Of the over 3,000 folios planned, only 227 were ever issued before the series was discontinued in 1945. Early USGS maps are very scarce and these folios offer the best source of presentation-quality topographic maps. The majority of folios, such as the one offered for sale here, were issued in a library edition containing unfolded, single-sided maps printed on heavy paper with a highly calendared (glossy) surface. This surface was specifically chosen to give the best effects to the patterns and colors. These characteristics make the library edition the preferred choice for collectors. Bookseller Inventory #

Bibliographic Details

Title: Geologic Atlas of the United States, Sonora ...
Publisher: Government Printing Office
Publication Date: 1897
Binding: Original Wraps
Book Condition: Very Good
Edition: First Edition

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